Fair Value Disclosures - Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Total Assets	$ 89,406	$ 77,254
Liabilities:
Total Liabilities	206,112	145,886
Level 1
Assets:
Total Assets	2,589	2,277
Level 1 | Deferred compensation plan assets
Assets:
Total Assets	2,589	2,277
Level 2
Assets:
Total Assets	86,817	74,977
Liabilities:
Total Liabilities	206,112	145,886
Level 2 | Foreign currency forward contracts
Assets:
Total Assets	885	1,558
Liabilities:
Total Liabilities	2,399	1,499
Level 2 | Interest rate swap contracts
Liabilities:
Total Liabilities	109,175	64,831
Level 2 | Deferred compensation plan assets
Assets:
Total Assets	85,932	73,419
Level 2 | Deferred compensation plan liabilities
Liabilities:
Total Liabilities	$ 94,538	$ 79,556